MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
126 - Index for table './default_mivn1/irmn_sessions.MYI' is corrupt; try to repair it
Query:
REPLACE INTO irmn_sessions SET `uid`=0,`sid`='1c7da8f8e86c5d80b7a1a8b9705cb9eb',`time`=1711647356,`ip`=X'0358fe32',`location`='/showthread.php?tid=10913&pid=18899',`useragent`='claudebot',`location1`=2,`location2`=10913,`nopermission`=0